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Method and system for determining vehicle running environment

A technology of driving environment and judgment method, applied in anti-collision systems, vehicle components, vehicle safety arrangements, etc., can solve problems such as failure to detect targets ahead

Inactive Publication Date: 2006-11-22
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, according to the prior art, the vehicle 10 sometimes cannot detect the target 11 ahead.
If the vehicle 10 is traveling in a mountainous area, the target 11 ahead is missed like this, and the result is even more problematic.

Method used

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  • Method and system for determining vehicle running environment
  • Method and system for determining vehicle running environment
  • Method and system for determining vehicle running environment

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Experimental program
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Embodiment Construction

[0021] Referring to the accompanying drawings, a preferred embodiment of the present invention will be described in detail below.

[0022] see figure 1 , according to a preferred embodiment of the present invention, the driving environment judging system of the vehicle 10 is a system for detecting a front target on the driving vehicle 10 .

[0023] Such as figure 2 As shown, the preferred embodiment includes: a single-beam radar 20, which is used to transmit a radar beam for scanning, and detects the reflected wave reflected by the target in front; a reflector 50, which is used to adjust the elevation angle of the scanning radar beam ( Adjust according to its angular orientation); a mirror angle sensor 51, used to detect the angular orientation of the reflective mirror 50; a stepper motor 30, used to adjust the angular orientation of the reflective mirror 50; and an electrical control unit 40 ( The following is represented by ECU)

[0024] The elevation angle of a radar be...

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PUM

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Abstract

A method and system for judging a vehicle driving environment, comprising: scanning a radar beam emitted by a moving vehicle at a variable elevation angle; detecting reflected waves of the scanning radar beam reflected by a target in front; detecting the elevation angle of the scanning radar beam when detecting the reflected wave ; Calculate the relative speed of the target in front according to the reflected wave; detect the speed of the driving vehicle; calculate the absolute speed of the target in front according to the relative speed and the speed of the driving vehicle; compare the elevation angle with the predetermined angle; compare the absolute speed with the predetermined speed . The reflected wave reflected by the target in front is the reflected wave of an original transmitted radar beam scanned at a variable elevation angle. When the reflected wave is received, the elevation angle of the radar beam is detected, the relative speed of the target ahead is calculated according to the reflected wave, the absolute speed of the target ahead is calculated according to the speed and relative speed of the driving vehicle, and the vehicle driving environment is judged according to the elevation angle and absolute speed.

Description

technical field [0001] The invention relates to a method and a system for judging the running environment of a vehicle, in particular to a method and a system for judging the running environment of a vehicle that is more suitable for driving on rough and undulating roads. Background technique [0002] In order to detect objects ahead (such as vehicles or road signs), the radio beams emitted by the radar are often scanned and the reflected waves are studied. [0003] According to the prior art, the radio beam emitted by the radar is scanned along the horizontal direction, and in the case of changing the scanning angle, it can only be changed along the horizontal direction. [0004] However, the roads on which vehicles travel are not always smooth. Typical road conditions are figure 1 The undulating road is shown. At this time, according to the prior art, sometimes the vehicle 10 cannot detect the target 11 ahead. If the vehicle 10 is traveling in a mountainous area, the ta...

Claims

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Application Information

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IPC IPC(8): G01S13/06G01S13/50G01S13/93G01S7/02B60R21/00G01S13/42G01S13/91G01S13/931G08G1/16
CPCG01S13/42G01S13/931G01S2013/932G01S2013/93275G01S2013/93271
Inventor 金志映
Owner HYUNDAI MOTOR CO LTD
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